What’s fiberglass PU sandwich panels? Manufacturers create fiberglass PU sandwich panels using glass-reinforced polymer and PU (polyurethane) foam, making them a popular insulating composite panel. They are very insulating, durable, and lightweight composite materials. It covers all the properties of FRP and PU foam.Because of its many advantages, it is widely used in refrigerated trucks, … Continue reading Fiberglass PU Foam Sandwich Panels